All it will take to save these unique creatures, some of which have lost the power of sight and all their color as they evolved in the dark, are modest restrictions on urban sprawl in Bexar County. Noah Greenwald, Center for Biological Diversity Endangered Species Director

Although some 1,700 acres less than a February 2011 proposal, the area is still almost quadruple the size of a 2003 designation that failed to include many important sites.